uncloud-mravi/uncloud/uncloud_pay/views.py

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from django.shortcuts import render
from django.db import transaction
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from django.contrib.auth import get_user_model
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from rest_framework import viewsets, permissions, status
from rest_framework.response import Response
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from rest_framework.decorators import action
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import json
from .models import *
from .serializers import *
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from datetime import datetime
import uncloud_pay.stripe as uncloud_stripe
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###
# Standard user views:
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class BalanceViewSet(viewsets.ViewSet):
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# here we return a number
# number = sum(payments) - sum(bills)
#bills = Bill.objects.filter(owner=self.request.user)
#payments = Payment.objects.filter(owner=self.request.user)
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# sum_paid = sum([ amount for amount payments..,. ]) # you get the picture
# sum_to_be_paid = sum([ amount for amount bills..,. ]) # you get the picture
pass
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class BillViewSet(viewsets.ReadOnlyModelViewSet):
serializer_class = BillSerializer
permission_classes = [permissions.IsAuthenticated]
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def get_queryset(self):
return Bill.objects.filter(owner=self.request.user)
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def unpaid(self, request):
return Bill.objects.filter(owner=self.request.user, paid=False)
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class PaymentViewSet(viewsets.ReadOnlyModelViewSet):
serializer_class = PaymentSerializer
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permission_classes = [permissions.IsAuthenticated]
def get_queryset(self):
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return Payment.objects.filter(owner=self.request.user)
class OrderViewSet(viewsets.ReadOnlyModelViewSet):
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serializer_class = OrderSerializer
permission_classes = [permissions.IsAuthenticated]
def get_queryset(self):
return Order.objects.filter(owner=self.request.user)
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class UserViewSet(viewsets.ReadOnlyModelViewSet):
serializer_class = UserSerializer
permission_classes = [permissions.IsAuthenticated]
def get_queryset(self):
return get_user_model().objects.all()
class PaymentMethodViewSet(viewsets.ModelViewSet):
permission_classes = [permissions.IsAuthenticated]
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def get_serializer_class(self):
if self.action == 'create':
return CreatePaymentMethodSerializer
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elif self.action == 'charge':
return ChargePaymentMethodSerializer
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else:
return PaymentMethodSerializer
def get_queryset(self):
return PaymentMethod.objects.filter(owner=self.request.user)
# XXX: Handling of errors is far from great down there.
@transaction.atomic
def create(self, request):
serializer = self.get_serializer(data=request.data)
serializer.is_valid(raise_exception=True)
# Retrieve Stripe customer ID for user.
customer_id = uncloud_stripe.get_customer_id_for(request.user)
if customer_id == None:
return Response(
{'error': 'Could not resolve customer stripe ID.'},
status=status.HTTP_500_INTERNAL_SERVER_ERROR)
# Register card under stripe customer.
credit_card = uncloud_stripe.CreditCard(**serializer.validated_data.pop('credit_card'))
card_request = uncloud_stripe.create_card(customer_id, credit_card)
if card_request['error']:
return Response({'stripe_error': card_request['error']}, status=status.HTTP_500_INTERNAL_SERVER_ERROR)
card_id = card_request['response_object']['id']
# Save payment method locally.
serializer.validated_data['stripe_card_id'] = card_request['response_object']['id']
payment_method = PaymentMethod.objects.create(owner=request.user, **serializer.validated_data)
# We do not want to return the credit card details sent with the POST
# request.
output_serializer = PaymentMethodSerializer(payment_method)
return Response(output_serializer.data)
@action(detail=True, methods=['post'])
def charge(self, request, pk=None):
payment_method = self.get_object()
serializer = self.get_serializer(data=request.data)
serializer.is_valid(raise_exception=True)
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amount = serializer.validated_data['amount']
try:
payment = payment_method.charge(amount)
output_serializer = PaymentSerializer(payment)
return Response(output_serializer.data)
except Exception as e:
return Response({'error': str(e)}, status=status.HTTP_500_INTERNAL_SERVER_ERROR)
###
# Admin views.
class AdminPaymentViewSet(viewsets.ModelViewSet):
serializer_class = PaymentSerializer
permission_classes = [permissions.IsAuthenticated]
def get_queryset(self):
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return Payment.objects.all()
def create(self, request):
serializer = self.get_serializer(data=request.data)
serializer.is_valid(raise_exception=True)
serializer.save(timestamp=datetime.now())
headers = self.get_success_headers(serializer.data)
return Response(serializer.data, status=status.HTTP_201_CREATED, headers=headers)
class AdminBillViewSet(viewsets.ModelViewSet):
serializer_class = BillSerializer
permission_classes = [permissions.IsAuthenticated]
def get_queryset(self):
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return Bill.objects.all()
def unpaid(self, request):
return Bill.objects.filter(owner=self.request.user, paid=False)
def create(self, request):
serializer = self.get_serializer(data=request.data)
serializer.is_valid(raise_exception=True)
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serializer.save(creation_date=datetime.now())
headers = self.get_success_headers(serializer.data)
return Response(serializer.data, status=status.HTTP_201_CREATED, headers=headers)
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class AdminOrderViewSet(viewsets.ModelViewSet):
serializer_class = OrderSerializer
permission_classes = [permissions.IsAuthenticated]
def get_queryset(self):
return Order.objects.all()